Sanitary attachment for telephone-transmitters.



PATENTED MAY 21, 1907.

- J. W. DODSON.-

SANITARY ATTACHMENT FOR TELEPHONE TRANSMITTERS.

' APPLIUATIOH FILED JULY 3, 1906.

v INENTOH fiaiafi/ 77 .fiols'on/ I By W F60 4 ATTORNEYS THE NORRIS PEI-Em co @NTTE JOSIAH w. DOLSON, or NEW YORK, N. Y.

SANITARY ATTACHMENT FOR TELEPHONE-TRANSMITTERS.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed July 3,1906. Serial No. 324,575.

To all whom it may concern/.1

Be it known that I, JosIAn W. DOLSON, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Sanitary Attachment for Telephone-Transmitters, of which the following is a full, clear, and exact description. Y

The object of the invention is to provide a new and improved sanitary attachment for telephone transmitters and like instruments, and arranged to enable the user of a telephone to speak against a clean piece of webbing extending across the mouth of the receiver, to insure the proper transmission of the sound to the diaphragm of the transmitter, and at the same time prevent the speaker from inhaling any unhealthy exhalations of a previous user of the telephone.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the sup port or frame of the improvement; Fi 2 is an enlarged front elevation of the same; Fig. 3 is a sectional side elevation of the improvement as applied to a telephone transmitter, the latter being shown in elevation; Fig. 4 is a side elevation of the locking device for the spindle carrying the roll of webbing, and Fig. 5 is a perspective view of the spindle.

A support or frame A is provided with a central opening A adapted to register with the opening in the mouthpiece of a telephone transmitter B of the usual construction, and the wall of the said opening A is provided with struck up tongues A bent rearwardly and adapted to clampingly engage the usual raised annular edge B of the mouthpiece of the transmitter B, to hold the support A in position on the transmitter and across the front of the mouthpiece, as will be readily understood by reference to Fig. 3.

A webbing C of paper or other suitable material, and preferably rendered antiseptic, is adapted to be drawn across the said opening A and consequently across the opening in the mouthpiece of the transmitter B, so that a person making use of the telephone and speaking directly against the webbing C causes a proper transmission of the sound to the diaphragm of the transmitter, and at the same time the user speaks against a perfectly clean surface, completely free of undesirable exhalations or other matter of a previous user of the telephone.

The webbing C, preferably in the form of a roll, is held on a spindle D carried in rear wardly bent lugs A formed on rearwardly bent arms A extending integrally from the upper end of the support or frame A, as

plainly illustrated in the drawings. The webbing C as it unwinds from the roll is extended through guides A and A arranged on the support or frame A above and below the opening A, the said guides being preferably in the form of transverse slots through which the webbing is passed, as indicated in Fig. 3. Thus by the arrangement described, the

lower end of the webbing C extends at the lower end of the support or frame A and,

when a person makes use of the telephone,

the webbing C is drawn downward until an entire clean piece of webbing extends across the mouthpiece of the transmitter B, so that the user can speak against this clean surface without danger of being contaminated by undesirable exhalations of a previous user of the telephone. The webbing C is preferably very thin, and as it is stretched across the opening of the mouthpiece it does not appreciably retard the transmission of the sound to the diaphragm of the transmitter.

One end of the spindle D is preferably provided with a head D which serves as a spring locking device for the spindle, to hold the same in position in the lugs A as plainly i11- dicated in Fig. 4, it being understood that when the roll of webbing C is used up a new one can be readily placed in position by first giving the spindle a quarter turn and then partly withdrawing the spindle, so that its free end disengages its log A to allow of placing a new roll of webbing on the spindle, between the lugs A of the arms A By reference to Fig. 2, it will be seen that the webbing C is somewhat wider than the width of the opening A, to fully cover the same, and the opening in the mouthpiece of the transmitter B, to prevent loss of sound and also to prevent any exhalations of the speaker from passing into the telephone transmitter. Thus, the latter is kept in perfectly sanitary condition and the user of the telephone is guarded against undesirable eX- halations of a previous user of the telephone.

Having thus described my invention, I claim as new and desire to secure by Letters l Patent:

1. A sanitary attachment for transmitters, comprising a frame for attachment to the mouth piece of the transmitter, the said frame having an opening for registering with the opening in the mouth piece, arms extending from the upper end of the frame, at the sides thereof, means for supporting a roll of webbing on the said arms, and guides on the said frame above and below the said opening for guiding the webbing across the said mouth piece, each guide consisting of parallel transverse slots produced in the frame and forming between them a transversely extending bar.

2. A sanitary attachment for transmitters, comprising a frame having an opening for registering with the mouth piece of the transmitter, spring clamping tongues on the wall of said opening for clamping engagement with the edge of the mouth piece, arms extending integrally from the upper end of the frame, and a web carried by said arms, the said frame being provided with parallel transverse slots above and below the said opening, the said slots forming transverse bars, the web being passed through the said slots and behind the said bars.

3. A sanitary attachment for transmitters, comprising a support consisting of a frame having an opening for registering with the opening in the mouthpiece of a transmitter, rearwardly extending spring clamping tongues on the wall of the said opening and for clamping engagement with the edge of the said mouthpiece, to hold the support in position on the mouthpiece, rearwardly bent arms extending integrally from the upper end of the frame and provided with rearwardly bent lugs, a spindle held in the said lugs and adapted to carry a roll of webbing, means on the spindle for holding the latter in position in the lugs, and guides on the said support tongues on the wall of the said opening and for clamping engagement with the edge of the said mouthpiece to hold the support in position on the mouthpiece, a spindle held on the said support and adapted to carry a roll of webbing, the spindle having a head for spring contact with the support to hold the spindle against accidental movement, and guides on the said support for guiding the webbing across the said opening.

5. A sanitary attachment for transmitters, comprising a support having an opening for registering with the opening in the mouthpiece of a transmitter, spring clamping tongues on the wall of the said opening and for clamping engagement with the edge of the said mouthpiece to hold the support in position on the mouthpiece, a spindle held in lugs on the said support and adapted to carry a roll of webbing, the lugs carrying the spindle being bent rearwardly, the said s indle having a head forming a spring loc ing device for the spindle to hold the same in position in the lugs and guides on the said support for guiding the webbing across the said opening.

6. A sanitary attachment for transmitters, comprising a support having an opening for registering with the opening in the mouth piece of a transmitter, means for clamping the support in position on the mouth piece, a spindle held on the support, and a roll of webbing carried by the spindle and capable of being drawn across the said. opening, the said spindle being provided at one end with a head forming a spring locking device to hold the spindle in position on the support.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

New York June 29, 06.

JOSIAH l/V. DOLSON.

Witnesses:

A. J. CONKLIN, (J. M. WHITFORD. 

